Follow Discord
Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.260 ·

Argument-scoped permission rules for built-in tool controls

← All of v2.1.260 Home All releases

Permission rules can now target specific arguments like Bash(curl *) instead of whole tools.

TierUse it nowhow much it should matter to you
Useful4my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaPermissionswhat it touches
KindImprovementsin v2.1.260,
Use it now Notable

Permission rules can now target specific arguments like Bash(curl *) instead of whole tools.

builtinToolPolicy and disabledBuiltinTools now accept argument-scoped rules like Bash(curl *) or Read(**/secrets/**), not just bare tool names. New parsing and validation logic, parseBuiltinRule and canonicalBuiltinRule, backs this and warns on malformed entries.

Read from
Names in the bundlebuiltinToolPolicydisabledBuiltinTools
What the documentation says
Documented inclaude-code/claude-apps-gateway-config
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up builtinToolPolicy, on Configuration reference. | <span id="builtintoolpolicy" />Built-in tool policy<br />`builtinToolPolicy` | `object` | MDM + Bootstrap<br />Added in 1.8089.0 | — | Approval policy per built-in tool or argument-scoped rule such as Bash(curl \*). “ask” requires user a… third-party/claude-desktop/configuration see the edit
Confirmed since Anthropic's documentation has since written up disabledBuiltinTools, on Configuration reference. | <span id="disabledbuiltintools" />Disabled built-in tools<br />`disabledBuiltinTools` | `string[]` | MDM + Bootstrap<br />Added in 1.2581.0 | — | Built-in tools, or argument-scoped permission rules such as Read(\*\*/.env), denied in Cowo… third-party/claude-desktop/configuration see the edit
Added since A small documentation edit on Telemetry and egress touched a line naming disabledBuiltinTools after this was published. With `disableEssentialTelemetry`, `disableNonessentialTelemetry`, `disableNonessentialServices`, and `disableAutoUpdates` all set to `true`, the desktop application makes **no outbound connections to Anthropic-operated hosts at runtime**. … third-party/claude-desktop/telemetry see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesA small documentation edit on Telemetry and egress touched a line naming disabledBuiltinTools after this was published.
Anthropic's release notes agreeFixed Edit/Write/Read permission rules whose path contains parentheses being dropped as invalid or ignored by the Bash sandbox, which left…

See this entry in the whole of v2.1.260 →

Feedback